| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could [adv] [vb infin] [noun] | 112 |
|
| 2 | [pron] could only [vb infin] [noun] | 55 |
|
| 3 | [pers pn] could only [vb infin] [noun] | 46 |
|
| 4 | they [modal v] only [vb infin] [noun] | 34 |
|
| 5 | they could only [vb infin] [noun] | 6 |
|
| 6 | they could only [verb] [noun] | 5 |
|
